(What the author wrote in the front is just a bunch of stuff, just jump to the back if you like, there is no main line anyway)
(Yu-Gi-Oh!, Shadow Poem, Summon of the Seven Saints, Werewolf)
(The author plays card games and will try his best to focus on the plot, and the deck construction is not scientific)
(There will be original cards)
There are only a few people playing cards, so if it becomes more complicated, it will become more complicated.